Research and Impact

This study evaluates the impact of ICAT de-escalation training within the Indianapolis Metropolitan Police Department on officers’ attitudes and behavior. Findings from a stepped-wedge randomized controlled trial design show significant reductions in use of force and subjects injured following training, with no increase in officers injured, and highlight the importance of organizational support and training reinforcement in sustaining behavioral change.

Jill Clark and colleagues, using nationally representative data, find that the potential for differential treatment by race and ethnicity in the food retail environment is associated with lower nutritional quality of food acquisitions for Black and Hispanic households.

PhD graduate Patthew Pesavento and professors Cäzilia Loibl and Stephanie Moulton published an economic evaluation study of 166,285 adult patients finding a higher probability of adverse financial outcomes among patients with type 2 diabetes.

This report by Robin Engel and Jenn Cherkauskas provides a detailed breakdown of traffic stop characteristics and outcomes at the department level, as well as across PSP’s four Areas, 16 Troops, and 89 Stations. PSP’s voluntary data collection and analysis align with best practices, showcasing its commitment to transparency and accountability to its communities and reinforcing its dedication to evidence-based policing practices. 

Russell Hassan, Clifford Stott and colleagues deliver the first systematic, theory-informed empirical analysis of the Columbus Division of Police post-2020 POPS framework using participatory action research across 60+ events to show how specific approaches contain conflict and promote self-regulation within protest crowds, also revealing tensions in organizational change.

Vladimir Kogan and Stéphane Lavertu analyze U.S. school board election data and find that nearly half of races go uncontested and that incumbents are reelected more than 80 percent of the time when they run. 

Daniel Kelley offer some answers as to why natural history collections, and specifically geological collections, are important and relevant to society today and to the future of humankind. Authors offer perspective on the ways that geological collections will continue to benefit society at large by providing some illustrative historical examples.